Oar-lock



A. SMITH.

(No Model.)

@AR mex. ,Y

'Pagentedfm 14, 1896.

AN DREW BGRANAM PHOTOUNQWASHIIIGTOH. D C

Unirse STATES' PATENT OFFICE.

ANDREW SMITH, OF TRAVERSE CITY, MICHIGAN.

OAR-LOC K.

SPECIFICATION forming part of Letters Patent No. 553,141, dated January14, 1896. Application iiled October 24,1895. Serial No. 566,744. (Nomodel.)

To LZ whom, it may concern:

Beit known that I, ANDRE W SMITH, of Traverse City, in the county ofGrandTraverse and State of Michigan, have invented certain new anduseful Improvements in Oar-Locks; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it pertains to make anduse it, reference being had to the accompanying drawings, which formpart of this specication.

This invention pertains to oar-locks, and the object of the saine is toprovide an improved device for holding the oar removably in position inthe oar-lock and at the same time afford the oar all the playnecessary.

With this objectin view the invention consists in the novel features ofconstruction hereinafter fully described and claimed, and illustrated bythe accompanying drawings, in which- Figure l is a perspective view ofan oar in position provided with my improved device. Fig. 2 is across-sectional view of the oar in position in the lock, with theimproved device so adjusted as to afford the oar rotary movement, suchas necessary in feathering the same. Fig. 3 is a similar view showingthe oar held from rotary motion, or, in other words, stationary with thelock. Fig. et is a plan. view of a section of the oar provided withmyimproved device. Fig. 5 is a longitudinal sectional view of the same.Fig. (iis a detail view of the slidable stop.

A designates the oar, and B a sleeve which encircles' the same, saidsleeve being bulged circumferentially,as indicated at B. Forconveniencein adjusting the sleeve to the oar the same is formed in twosections, the meeting edges of the sections being beveled, with thebeveled edges of one of the sections iitting within the beveled edges ofthe other section, as shown at C. The sections are secured to the oar byscrews D, and owing to the beveled joint above mentioned the sectionshave a tendency to wedge together when drawn to the oar by the screws,thus securing a perfectly even, substantial fit.

Bulge B of the sleeve is formed upon its periphery with the groove ordepression E, having formed upon diametrically opposite sides-thereofthe oppositely-inclined shoulders F, which extend to the outer surfaceof the sleeve with which they are flush or even, as clearly shown.

The forked oar-lock I has the usual pintle J, and upon the oppositeinner faces of the lock are the normally inwardly-projecting pins K,which take the groove E, thus holding the oar from longitudinaldisplacement, but permitting it the desired rotary motion forfeathering. For removing the oar from the lock the former is rotateduntil the inclined shoulders are in such a position as to force the pinsbackward in the oar-lock and entirely disengaged from the groove, whenthe oar may be readily withdrawn. This release is quick and effectual.Said pins are conned in the depressions L of the lock, each pin beingformed with the shoulder K, which engages the end of the depression andholds the pin from further inward movement, while a coiled spring M isconfined upon the outer extremity of each pin and between said shoulderand the screw-plug N, inserted in the outer end of the recess. Saidscrew-plug is formed with the longitudinal depression N for the stem ofthe locking-pin to workin, as shown.

For the purpose of holding the oar from rotary movement I provide thestop O, which is secured to the inner end of the spring-latch P andmovable in depression Q extending at right angles to the circumferentialgroove and at a point adjacent one of the spring-actuated locking-pins,only s ufcient room remaining between the inclined shoulder and theslidable stop to accommodate said pin. The bowed stem of thespring-latch projects toward the handle end of the oar, and when it isdesired to hold theoar from rotary inovement the same is simply rotateduntil the inclined shoulders abut solidly against the pins, as shown inFig. 3, and then the stopis drawn outward into the groove E, thuspreventing the rotation of the oar upon said pins, the stop being heldin position by the spring-stem. The groove in which the slidable stopworks is narrower than the diam eter of the lockingpins, so that thereis no danger of the same catching in said groove upon adjusting the oar,and it will also be observed'that the said IOO .m'e'nt from the lock.

stop in length is Y.of greater 4extent than the width of groove E, asshown by the dotted lines in Fig. 5, thus materially bracing said stopagainst the walls of its groove when the same is brought in action. Whenthe stop mentioned is not desired for use it is simply pushed back intothe position indicated in Fig. 4 and held by the spring-stein, where itis entirely out of the way, leaving groove E unobstructed.

A short leather covering R is provided for the oar below the sleeve, sothat if it i's desired to work the oar in the lock independently of theimproved device above described it may be so worked. The oar is of suchdiameter or thickness as to permit its insertion in the lock only atpoints below thel sai-d leather covering, so that when used either withthe sleeve in position in the loc-k v'or the leather in position thereis no danger of the oar being disengaged by vertical displace- Inwithdrawing the oar all that is necessary is to so rotate the same as toproject outwardly the spring-actuated pins, as before stated, and thengive theoar'a longitudinal movement, so as to take the pins ont of linewith groove E.

Having thus fully'described my invention, what I claim, and desire Vtosecure by Letters Patent, isA

l. 4The combinati-'on of an oar-lock, backA wardfly dep'ressible springheld locking pins normally projecting into the lock, an 'oar'carrying avcircumferential groove `adapted to be engaged by the said pin-s, and lamechanism for automatically ldfisengaging the pins from sai'd groove,substantial-ly as shown and -described.

2. 'Thecombination of an oar-lock, backwardly depressible spring heldlocking pins normal-ly projecting into the lock, an'oar provided with acircumferential groove which is engaged by said locking pins,and amechanismoperated by the rotation of the oar for displacing the lockingpins from ysaid groove substantially as shown and described.

I3. The v'combination of an oar-lock, back wardly'depressible'springheld locking pins normally projecting into the lock, theoar carrying aA'circumferential groove adapted to be engaged by said lock-ing pins,and opposi'tely inclined shoulders arranged in diametrically oppositesides of the said groove which when the `said Yoar is rotated areadapted to push backward the said pins so as to release the said oar,substantially as shown an'd 4described. j n

4. vThe'combination-of an oar-lock, 'backwardly depressi'bl'e oppositelyarranged looking pi-ns normally projecting into 'the lock, the oar, thec'irc'umferentially enlarged 'and lgroo'ved sleeve carriedby the oar andadapted to be engaged by the said locking pins, sub` stantially as shownand described.

5. The combination of an oar-lock, backwardly depressible normallyprojecting pins carried by the lock, the oar, and the circumferentiallygrooved sleeve carried thereby, and the oppositely inclined shouldersraised from the bottom of the groove and extending to the outerperiphery of the sleeve, said shoulders being arranged diametricallyopposite each other, for the purpose substantially as shown anddescribed.

6. The combination of an oar, a sleeve arranged thereon adapted to workin the oarlock, said sleeve being formed in two longitudinal sections,the meeting edges of the sec tions being beveled, with the edges of onesection lfitting within the edges of the other section, whereby when thesections are secured to the oar the same will be caused to lit theoar-snugly owing to the wed'ging action of the said beveled sections,substantially as shown and described.

7. lThe combination with the oar-lock formed with an inwardly extendingdepression terminating in a passage of smaller extent leading to theinterior of the lock, of the pin adapted at its inner end to projectthrough the smaller depression or passage, the shoulder upon the pin toengage the inwardly extending depression, the coiled spring surroundingthe stem of the pin, and the longitudinally recessed screw plug in whichthe said stem works, said screw plug fitting the outer end of `saiddepression, substantially as shown and described.

. 8. The combination of the oar, the circumferentially grooved sleeve,the shoulders raised from the bottom of the said groove, the oar-lockand the pins projecting therefrom into'the groove, andthe stopadjustable transversely across the'groove and adj acent-one of saidshoulders, so as toconiine one of the locking pins between itself andthe shoulder, for the purpose substantially as shown and described. Y

'9. Thevcom-bination of the oar, the circumferentially grooved sleevethereon, the shoulders raised from the bottom of the groove, theinwardly extending pins, carried by the oarlock, the stop slidabletransversely across the groovefsaids`top being of greater length thanthe width ofthe groove for the purpose stated, and the spring latch towhich the stop is connected for vadjusting the same, substantially asshown and described.

In testimony whereof I Aaffix my signature in Ypresence of twowitnesses.

ANDREV SMITH.

Witnesses J. M. Nns'B-rr, HUBERT E. PECK.

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